Science - The Atom

Question 0

Name the three sub-atomic particles the atom is made up of.

Answer 0

Protons(p), neutrons(n) and electrons(e).

Question 1

What is an atom?

Answer 1

It is the smallest part of an element which still has the properties of the element.

Question 2

Name the charge, mass and location of each sub-atomic particle.

Answer 2

Proton - +1 , 1 , in nucleus
Neutron - 0 , 1, in nucleus
Electron - -1, 1/1850 , orbiting/outside nucleus

Question 3

What is the smaller number on the periodic table?

Answer 3

The atomic number. (Number of protons and number of electrons).

Question 4

What is thw bigger number on the periodic table?

Answer 4

The mass number.

Question 5

What is the mass number?

Answer 5

Number of protons + number of neutrons = mass number.

Question 6

Formula for number of neutrons:

Answer 6

Mass number - atomic number

Question 7

What is a Bohr diagram

Answer 7

It shows the electron arrangement in rings or shells.

Question 8

What are isotopes?

Answer 8

Isotopes are atoms of the same element with different amounts of neutrons. -eg Carbon 12/13/14